用于项目中整个聚焦元素的Enter按钮事件的动作脚本

Question

我正在开发一个Adobe AIR应用程序.我已经为我的项目中的所有按钮实现了单击事件.现在我想为聚焦按钮添加"ENTER"键盘事件.有没有简单的方法来实现它？请指教我..

Answer 1

你可以做这样的事情:

<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" 
                       xmlns:s="library://ns.adobe.com/flex/spark" 
                       xmlns:mx="library://ns.adobe.com/flex/mx"
                       addedToStage="addEnterFeature()">
    <fx:Script>
        <![CDATA[
            private function addEnterFeature() : void
            {
                stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
                myButton.addEventListener(MouseEvent.CLICK, onButtonClick);
            }

            private function onKeyDown(e : KeyboardEvent) : void
            {
                if(e.keyCode == Keyboard.ENTER && stage.focus is Button)
                    // Simulate a mouse click on current focused button
                    Button(stage.focus).dispatchEvent(new MouseEvent(MouseEvent.CLICK));
            }

            private function onButtonClick(e : Event) : void
            {
                trace("Button click handler");
            }

        ]]>
    </fx:Script>
    <s:Button label="Test" id="myButton" />
</s:WindowedApplication>

如果您在应用中的每个按钮上使用Enter键(具有焦点),它将模拟鼠标单击